While the value of BI has been well-demonstrated for quite some time, that value has seemed hypothetical to many, because of the difficulty in keeping OLAP cubes up-to-date. Compared to an OLTP database, OLAP cubes have, for many, projected an image of inferiority because their data has for the most part been reflective of historical facts rather than of current transactions. Historical data, and analysis of it, is very important, but appreciating that importance takes a certain vision and leap-of-faith. ......